Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hat chau do snippets" » "ha chau do snippets", "lai chau do snippets", "hat nhan do snippets", "hat chau doc snippets", "hat cau do snippets", "hat chau tho snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("hat chau do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hat chau do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hat chau do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat chau do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.